Ribbon burner



Patented June 8, 1948 UNITED STATES PATENT OFFICE RIBBON BURNER John Harold Flynn and William B. Ensign, New Rochelle, N. Y., aslilnors to Ensign Ribbon .Burners, Inc., Mount Vernon, N. Y., a corporation of New York Application November 15, 1944, Serial No. 563,491

Claims. (Cl. 158-116) This invention relates to a ribbon type gaseous fuel burner. v

An object of the invention is the provision of a burner of the indicated character which provides l2. The tube has a slot l3 extending longitudinally therein between its ends. Arranged in the slot I3 is port structure ll composed of strip material or ribbons ii of similar construction. The

a multiplicity of individual cone type flames 5 structure I is attached to the tube l0 projecting closely spaced, and piloting flames to maintain .into the slot l3 and supported by pins II which the cone flames burning with the gaseous fuel extend through the wall of the tube and the ribunder high pressure and highvelocity to give bons as shown in Figs.1a1id 2. unusually high temperature. Each of the ribbons it consists of a strip of A further object of the invention is the prochromium steel crimped or corrugated at equiyision 01' a ribbon construction and arrangement distantly spaced points to provide equal subfor a gaseous fuel burner providing ports for stantially semi-circular portions I1 and equal propagating main heating flames-and piloting straight portions l8 between the portions ll. flames to keep the main flames 'buming, and The construction of each ribbon. I5 is such that wherein the ribbons restrict the flow of fuel in a suitable number of them may be arranged in such a way that fuel pressure and velocity for side-by-side relation to provide a port structure the main flames are increased, while the fuel to affording nterspersed main p ts an Smaller the piloting port is slowed down to a low vepiloting ports. A locity and steady piloting flame propagation, to efe enc t i i l be e wo o the end that the burner will be of increased cathe ribbons are arranged reversely. to each other pacity and thermal eiiiciency. side-by-side with the portions ll of one ribbon With the foregoing principal objects, other obdirectly oppo ite those of the other ribbon. and iects of the invention will appear from the emthe portions I I of one ribbon directly opposite bodlments of the invention, which, by way of those of the other ribbon. This provides a series example, are described in the following speclflof main ports is in a row extendin l it ication and illustrated in the accompanying drawnally. The ports l9 are spacedfromeach other ing,in whichto produce individual jet or cone flames. Ad-

Fig. 1 is a central longitudinal sectional view ditional ribbons ii are arranged in interlocking of a burner embodying the features of the inand nested relation at each side. of the two reventlon. versely arranged ribbons aforesaid. The addi- Flg. 2 is an enlarged transverse sectional view tional ribbons are side-by-side each in the same taken on the line 2-2 of Fig. 1. way, so that curved portions H are received in Fig. 3 is a fragmentary plan view on a eneach other injseriatim. This provides a multilarged scale showing the construction and arp lfiy f m l lll P g po 2 ES rangement of ribbons providing the main heating well as additional main ports 2i. The ports 2i flame ports and the piloting flame ports. occur by reason of the contact of the portions Fig. 4 is a side view of a portion of e of th ll of the outermost ribbons with the walls of ribbons showninFlg. 3. a v the slots it, such walls being indicated by the Fig. 5 is a fragmentary plan view showing the I dot-and-dash lines and-designated 22 in Fig. 3. construction and arrangement'ofa modified form 4 11 1 195 l9 and II pr u individual l 1' of ribbon. cone flames, the flame propagation of the ports Fig. 6 is a view similar to Fig. 5.11m; showing I! and 2| resulting from high pressure and inai'urthermodifled form of ribbon. t creased velocity. The ports 20 produce steady Fig. 7 is a transverse sectional view throughja low pressure and low velocity piloting flames for modified form of burner tube with ribbons or the the mainiiames, so as to keep the latter bumtype shown inFig. 5. ing as long as the combustible mixture is fed into Fig. 8 is a fragmentary perspective view of a the tube in. pair of ribbons embodying further slight modifl- It has been discovered thatthe' ribbons i5 concations. structed and arranged in the manner shown and I Referring now to Fig. 1 it will be n th described provide a'means whereby the pressure burner includes a tube It of suitable length and of the gaseous fuel fed to the burner tube ill may diameter. The tube is adapted to receive a combe increased. This causes the fuel to flow through bustible mixture of air and gaseous fuel which the larger main ports is and 2| with increased is fed into one end of the tube by an inspirator velocity and an accelerated rate of flame propa- H. The other end of the tube is closed, as at gation. This maximizes the capacity and thermal for pressure and velocity of the gaseous fuel may be varied by changing the number of ribbons used. As shown in Fig. 5, the ribbons l may be paired reversely to each other, and the pairs arranged side-by-side with the corrugations II in contact with the straight portions ill of adjacent ribbons, to provide the main ports l9 and piloting ports 20. To prevent endwise movement of the ribbons with respect to each other there are indentations in one side of each ribbon and corresponding raised protuberances 23 receivable in the indentations.

In Fig. 6 there is shown another modification of the ribbon wherein there are provided small crimps or corrugations 24 in the portions l8 betweenthe portions i'l.v An arrangement of ribbons having the crimps 24 in addition to the crimps i1, provide piloting ports 25 in longitudinal rows along each row of main flame ports I! on the outsides thereof in lieu of some of the ports H.

In Fig. '7 there is shown a modified burner tubular body 26 having a machined slot 21 and longitudinal ledges or steps 28. Ribbons l5 of/the type shown in Fig. 6 are arranged in the slot 21 and rest on the steps 28, to constitute a port structure the main cone flames and piloting flames.

In Fig. 8 there is shown a further modified form of ribbon IS in which semi-hexagonal portions 29 are provided in lieu of the semi-circular portions il. A suitable number of ribbons having the portions 29 may be assembled in the manner shown in Fig. 3 to provide a substantially similar spacing of the main and piloting ports both lengthwise and crosswise to meet different requirements.

We claim:

1. A burner comprising a tube adapted to receive a gaseous fuel, said tube'having a longitudinal slot communicating with the interior of the tube, and strip material in the slot which is coriugated at intervals, some of said corrugations reversely arranged side by side to provide series of main ports capable of propagating series of high velocity individual heating flames, and other ports capable of propagating series of low velocity piloting flames for the main flames.

2. A burner as set forth in claim 1, wherein said strip material consists of separate strips each of which has alternate straight portions and. corrugations.

3. A burner as set forth in claimxl, wherein said strip material consists of separate ribbons, and each ribbon has equal straight portions between the corrugations, said corrugations themselves being equal to each other.

4. A burner comprising a tube adapted to receivea gaseous fuel, said tube having a longitudinal slot therein communicating with the interior of the tube, and a port structure within the slot extending throughout the entire length thereof,

said structure consisting of metal ribbons each of which is formedto embody equal straight portions intervening equal corrugations, said ribbons being disposed side-by-side, certain of the ribbons being arranged reversely with respectto each other so that their straight portions contacteach other and the corrugations are directly opposite each other, and other ribbons being arranged so that their corrugations are interlocked and the straight portions are spaced, to thereby provide interspersed main flame ports and smaller piloting flame ports.-

5. A burner comprising-a hollow body adapted to receive a gaseous'fuel, said body having a longitudinal slot communicating with the interior of the body, and metal. strips in said slot, said strips being corrugated at intervals, some of said strips paired side by side with their corrugations reversed and registered in pairs forming main ports capable of propagating high velocity individual heating flames. and other strips arranged side by side with their corrugations nested in groups forming smaller ports capable of propagating low velocity piloting flames for the main flames.

JOHN HAROLD FLYNN. WILLIAM B. ENSIGN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,742,607 'Machlet et a1 Jan. '1, 1930 2,210,069 Ensign Aug. ,6, 1940 2,228,150 Norman Jan. '7, 1941 5 i, corrugations nested to provide series of smaller 

